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20645 Higher-Order Abstraction in Hardware Descriptions with CλaSH
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Gerards, M.E.T. and Baaij, C.P.R. and Kuper, J. and Kooijman, M. (2011) Higher-Order Abstraction in Hardware Descriptions with CλaSH. In: Proceedings of the 14th EUROMICRO Conference on Digital System Design, DSD 2011, 31 Aug - 2 Sept 2011, Oulu, Finland. pp. 495-502. IEEE Computer Society. ISBN 978-0-7695-4494-6

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Synchronous hardware can be straightforwardly modelled as a function from input and (current) state to an updated state and output. The CλaSH compiler can translate such a transition function, described in a functional language,to synthesisable VHDL. Taking a hardware-oriented viewpoint, components can then be seen as an instantiation of such a transition function. An abstraction called Arrows is used to directly model components by combining a transition function and its state. The abstraction also provides an uniform interface for composition, without losing the referential transparency offered by a functional description. Furthermore, readability of hardware designs is increased by the use of the γ-syntax, that automatically composes components according to the Arrow interface. The advantages of the Arrow abstraction and the γ-syntax are demonstrated by means of a realistic example circuit consisting of multiple components. This is a significant extension to CλaSH and enables many high level abstractions.

Item Type:Conference or Workshop Paper (Full Paper, Talk)
Research Group:EWI-CAES: Computer Architecture for Embedded Systems
Research Program:CTIT-WiSe: Wireless and Sensor Systems
Research Project:EASY: Embedded Adaptive Streaming sYstems
Uncontrolled Keywords:Functional programming, Hardware Description Languages, Pipeline processing
ID Code:20645
Deposited On:07 October 2011
More Information:statisticsmetis

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